function countDown(setShow, setTime, setBtn) {
    var timeA = new Date();
    var timeB = new Date(setTime);
    var setBtn = document.getElementById(setBtn);
    var timeDifference = timeB - timeA;
    if (timeDifference >= 0) {
        timeDifference = timeDifference / 1000;
        timeDifference = Math.floor(timeDifference);
        var wan = Math.floor(timeDifference / 86400);
        var l_wan = timeDifference % 86400;
        //var l_wan = timeDifference;
        var hour = Math.floor(l_wan / 3600);
        var l_hour = l_wan % 3600;
        var minute = Math.floor(l_hour / 60);
        var second = l_hour % 60;
        var showPart = document.getElementById(setShow);
//        showPart.innerHTML = "<div class=box_time>" + wan + " วัน  " + hour + "</div><div class=box_time>" + minute + "</div><div class=box_time>" + second + "</div><div class=\"clear\"></div>";
        showPart.innerHTML = "<div class=txtDate7>" + wan + " วัน</div><div class=txtDate4>" + hour + "</div><div class=txtDate5>" + minute + "</div><div class=txtDate6>" + second + "</div>";
        if (hour == 0 && minute == 0 && second == 0) {
            // ¡��ԡ��ùѺ�����ѧ����ͤú
            clearInterval(iCountDown);

            // ����ѧ��ѹ��� ����ͧ��
            setBtn.innerHTML = "<input type=image src=images/closed.png />";
        }
    }
    else {
        //setBtn.innerHTML = "<input type=image src=images/closed.png />";
    }
}